official nasa
nasadem.XYZ
NASADEM is a global, high-quality digital elevation model, produced by NASA. Unlike many other elevation datasets, it does not have regions where data is missing, spurious bumps or artifacts. There is more information about the source data at the official NASA website.
https://www.nasadem.xyz/
NASADEM: Creating a New NASA Digital Elevation Model and Associated Products | Earthdata
Principal Investigator (PI): Sean Buckley, NASA's Jet Propulsion Laboratory Our objective is to provide the scientific and civil communities with a state-of-the-art global digital elevation model (DEM) derived from a combination of Shuttle Radar Topography Mission ( SRTM) processing improvements, elevation control, void-filling and merging with data unavailable at the
https://earthdata.nasa.gov/esds/competitive-programs/measures/nasadem